The Small Air Sacs of the Lungs are The

Question

The small air sacs of the lungs are the
A) alveoli.
B) bronchioles.
C) arterioles.
D) spiracles.
E) uvula.

Accepted Answer

The small air sacs of the lungs are called alveoli. Bronchioles are the smaller branches of the bronchi that lead to the alveoli. Arterioles are small arteries that carry blood away from the heart. Spiracles are the external openings of the respiratory system in insects. The uvula is a small fleshy structure that hangs down from the soft palate in the mouth.